Mạng và viễn thông P12

Signalling System Noe 7 TheITU-Tsignallingsystemnumber7, SS number7,SS7,CCITT7,C7 or numberseven signalling system is the most recently developed of telephone network signalling systems. It is already widely deployed in digital telephone networks and ISDNs across the world, and also will be a ‘cornerstone’ of ‘intelligent networks’ and broadband ISDNs (B-ISDN).